G ripper-perforator



(No Model?) W. T. NIG KERSON.

V GRIPPER PBRFORATOR.

Patented Dec. 9-

IL-masses Etta r-ru w NITED STATES Futon.-

ATENT GRlPPER-PERFORATOR.

SPECIFICATION forming part of Letters Patent No. 442,536, dated December9, 189 0.

Application filed August 9, 1890. Serial No. 361,576. (No model.)

i'lo aZZ whom it may concern.- Be it known that I, WILL T. NIOKERSON, acitizen of the United States of America, residing at W'orthingtomin thecountyof Greene and State of Indiana, have invented certain new anduseful Improvements in Gripper- Perforators, of which the following is aspecification, reference being had therein to the accompanying drawings.

This invention pertains to certain new and useful improvements ingrippers for printing-presses, having for its object the production ofsimple and highly-efficient improved means for perforating the paperwhile being printed.

The invention comprises a convexed bar having a series of holes oropenings and a gripper-arm having a perforated concaved portion and ayielding or spring-held bar or plate carrying perforating pins or teeth,substantially as hereinafter fully set forth, and particularly pointedout in the claims.

In the accompanying drawings, Figure 1 is a view in perspective showingmy improvements attached to a portion of a printingpress. Fig. 2 is aview of the perforating gripper-arm. Fig. 3 is aview of the perforatingconvexed bar detached. Fig. 4 isatransverse sectional view on the linea: as, Fig. 2. Figs. 5 and 6 are details.

Referring to the drawings, A designates a bar or rod,which is convexedon its outer surface and provided throughout with a series of holes orperforations a. The under side of this bar is concaved to permit thepunohings to fall freely to the floor. This bar is provided with widenedflattened ends a a which have right-angular flanges a for fitting overthe upper and lower ends of the platen P of a printing-press. Throughthe flange a of the upper end a work two thumb-screws B, by which thebar is secured in position. From the lower flattened end a project twoshort parallel lugs or studs 1).

O is the perforating gripper-arm. It comprises a bar D, which isconcaved on one face, between two parallel flanges d. A series of and isslightly wider than the latter.

lugs or studs Z) of bar A when the parts are brought together, and thuscause the holes or perforations of bar A and arm or bar D to coincide. Aslot d is formed in the lower end of bar D for the insertiontherethrough of a screw eof a two-part clamp E, by which the same issecured to the gripper shaft S of the press, said parts being united bya thumb-screw 6, working in the ends thereof.

F is the movable bar or plate, provided with a series of perforatingteeth or pins f, designed to pass through the holes or perforations ofthe arm or bar D and bar A. This bar or plate is secured at its ends onshort screws or posts f of bar D, and it and its pins are normally heldretracted by coil-spring f encircling said posts or screws and locatedbetween arm or bar D and bar or plate F. To the rear side of the latteris secured (or it may be formed therewith) a slug or block g, whichextends to near the ends of said bar or plate This slug or block servesto make the parts the same height as the type, and thus insure thedepression of the perforating-pins at each operation of the machine.

In practice the bar A is secured at the de sired point across the faceof the platen, and the gripperarm is so adjusted on its shaft by theclamp E as to cause the holes or eyes thereof to coincide with the lugsor studs of bar A when the parts are brought together at each impressionof the type. \Vhen the latter occurs, the bar or plate carrying the perforating-pins is depressed as against the action of the springs, and thepins thereof are forced through the coincident holes or perforations ofthe bar or arm D and the barA. Thus a series of holes is formed in thecard or paper sheet previously placed over the outer convexed face ofsaid latter bar. The punching-s or waste caused by the perforation areallowed to readily fall from the machine from beneath the concaved faceof the bar A.

The advantages of my invention will be apparent to those skilled in theart to which it appertains, and it will be especially observed that auniform pressure is secured throughout the length of the movable bar orplate, whereby all the perforating-pins are simultaneously depressed,thereby securing perfect results and holding the card or paper firmly inplace while being printed and perforated. The parts are extremelysimple, cheap, and durable, and not likely to readily get out of orderor become deranged.

I claim as my invention 1. The herein-described improvedgripperperforator, comprising the bar having an outer convexed face anda series of holes or perforations, the arm or bar having a concaved faceand a corresponding series of holes or perforations, and theperforating-pins, substan tially as set forth.

2. The herein-described improved gripperperforator, comprising the barhaving an inner 'concaved face, an outer convexed =face, andaseries ofholes'or perforations, the-arm or=barl1avingan outer concaved face,parallelside fi'an-ges, and a corresponding seriesof holesonperforations, and themovablebar or plate=carry in g theperforating-pins, substantially asset forth.

The herein-described improved gripperperforator, comprising the barhaving a series of holes or perforations and upper andlower widened endsand provided with short lugs or studs, the thumbscrews for securing saidbar in place, and the perforating-arm having a lower extended flattenedend provided With holes or eyes for the reception of said lugs or studsand carrying the spring-held bar or plate having the perforating-pins,substantially-as set forth.

4. Thecombinatiomwith the gripper-shaft of a printing-press and the barsecured tothe platen of such press and having a series of holes orperforations, of the perforating-arm 'havinga lower extended flattenedend provided with a slot and the two-part clamp secured to saidgripper-shaft and having a setscrew designed to be inserted 'ihroughsaid slot, substantiallyasset forth.

In testimony whereof -I affix my signature'in presence of two witnesses.

WILL T. NIOKERSON.

Witnesses: 7

WILLIAM H. COOPER, I. G. TOMLINSON.

